使 Python 对象可序列化的函数

from copy import deepcopy
from str import basestring

def enserializable(model):
    """
    本函数用于将对象可序列化，且返回的字典都是新的（deepcopy）
    """
    if isinstance(model, dict):
        model = deepcopy(model)
        to_pop = []
        for k in model:
            # 过滤
            if isinstance(k, basestring) and (k.startswith(‘_‘) or k.isupper()):
                to_pop.append(k)
                continue
            # 递归
            else:
                model[k] = enserializable(model[k])
        for k in to_pop:
            model.pop(k)
        return model
    elif hasattr(model, ‘__dict__‘):
        return enserializable(model.__dict__)
    elif isinstance(model, (list, tuple)):
        return [enserializable(m) for m in model]
    else:
        return model